Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Aliasghar Ajami"'
Publikováno v:
Applied Physics A. 127
This paper reports the effect of Ti:Sapphire laser (800 nm, 30 fs) fluence on the surface morphology, ablated area, ablation rate and hardness of a femtosecond laser irradiated Zn in air and ethanol. Targets were exposed to 1000 succeeding pulses at
Induced birefringence in glass: depletion and enhancement by orthogonal-polarized femtosecond pulses
Publikováno v:
Applied Physics A. 126
We show spectacular and different effect of the sequential and simultaneous writing of two perpendicularly polarized ultrashort laser pulse trains on profile and magnitude of induced optical retardation inside fused silica glass. Clear birefringence
Autor:
Peter M. Gruber, Maximilian Tromayer, Aleksandr Ovsianikov, Robert Liska, Aliasghar Ajami, Agnes Dobos, Roman Dedic
Publikováno v:
Polymer Chemistry. 9:3108-3117
Direct cell encapsulation is a powerful tool for fabrication of biomimetic 3D cell culture models in vitro. This method allows more precise recapitulation of the natural environment and physiological functions of cells compared to classical 2D cultur
Publikováno v:
Physica B: Condensed Matter. 513:48-57
The effect of femtosecond laser fluence on nanostructuring of Tungsten (W) and Molybdenum (Mo) has been investigated after ablation in ethanol environment. A Ti: Sapphire laser (800 nm, 30 fs) at fluences ranging from 0.6 to 5.7 J cm −2 was employe
Autor:
J. Svanda, Petr Slepička, Petr Macháč, Y. Kalachyova, Václav Švorčík, Zdeňka Kolská, Oleksiy Lyutakov, Jakub Siegel, Aliasghar Ajami, Wolfgang Husinsky
Publikováno v:
Optical Materials. 112:110695
Development of materials with highly nonlinear optical activity represents an intensively studied discipline due to potentially unique applications of such materials in photonics and information technologies. In this work the creation of ordered nano
Publikováno v:
Journal of Non-Crystalline Solids. 426:159-163
The commercially available glass BK7 was chosen to prepare silver-rich layer within the glass by the silver (Ag) ion exchange method in order to enhance its nonlinear optical properties. The glass substrates were doped with Ag at 320 °C by a 50-minu
Publikováno v:
Journal of the Optical Society of America B. 37:2878
This paper reports on the effect of both the pulse duration and environments on the surface morphology, ablated area, ablation rate, and mechanical properties of a femtosecond laser irradiated zinc (Zn) in air and ethanol. The targets were exposed to
Publikováno v:
Applied Physics. B, Lasers and Optics
We present an experimental technique to determine the degenerate two-photon absorption (2PA) spectra by performing a single Z-scan using a high-spectral-irradiance white light continuum (WLC) generated by a hollow core fiber. The hollow fiber was fil
Autor:
Maximilian Tromayer, Arnulf Rosspeintner, Robert Liska, Felix Plasser, Aleksandr Ovsianikov, Eric Vauthey, Wolfgang Husinsky, Peter M. Gruber, Aliasghar Ajami, Leticia González
Publikováno v:
Scientific Reports
Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
Scientific Reports, Vol. 8, No 17273 (2018)
Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
Scientific Reports, Vol. 8, No 17273 (2018)
Two-photon induced polymerization (2PP) based 3D printing is a powerful microfabrication tool. Specialized two-photon initiators (2PIs) are critical components of the employed photosensitive polymerizable formulations. This work investigates the coop
Publikováno v:
Applied Physics A. 124
We have succeeded in realizing a method to control the spatial distribution of optical retardation as a result of nanogratings in bulk-fused silica induced by ultrashort laser pulses. A colorimetry-based retardation measurement (CBRM) based on the Mi